JPS6014066Y2 - gas control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gas control device that opens and closes a gas cock using a driving source.

Conventionally, this type of device generally uses a motor to drive a general gas cock with a tapered closure fitted into the closure hole of the hook body, but this type of gas cock has a bite and is relatively slow. Since a large rotational operating force is required and the rotation of the motor needs to be reduced to a relatively small angle of rotation of the operating shaft, the motor is connected to the operating shaft of the gas hook via a gear train to reduce the required rotational force. According to this formula, when the return spring is used to return the operating shaft to the closed position, the gear train and the operating shaft should be adjusted so that a large load due to the reverse rotation of the gear train does not act on the operating shaft. It is necessary to interpose a clutch between the two, resulting in the disadvantage that the device becomes large and complicated.

For example, in order to solve the inconvenience of
As seen in Publication No. 93, the gas cock is a disc type which is opened and closed by the rotation of a disc-shaped closure that is pressed against the cock body and one side wall surface within the cock body, and is driven by a rotating solenoid device. It is conceivable that
In this case, the rotary solenoid device must be kept in the open position while the rotary solenoid device is energized, which disadvantageously consumes a relatively large amount of electric power.

The purpose of the present invention is to provide a device that eliminates such inconveniences, and is of the type that connects the operating shaft 2 of the gas cock 1 with a drive source 4 that rotates against the return spring 3. The gas cock 1 includes a cock body 5 having a gas inlet 11 and a gas outlet 13, and a hook body 5 provided with the gas inlet 11 or the gas outlet 13 in the cock body 5.
is pressed against one side wall surface of the gas inlet 11 or the gas outlet 1.
The drive source 4 is a rotary solenoid device comprising a solenoid 7 and a movable element 8 that rotates when the solenoid 7 is energized. The child 8 and the operating shaft 2 are connected by a coupling 17, and the operating shaft 2 is further provided with a cam 24 having a locking step 24a, and the locking step 24a is provided with a locking piece 25 that can be freely engaged and detached. At the same time, a separate locking device 27 having a force weaker than the solenoid 7 is connected to the lock piece 25 to keep it engaged with the locking step 24a only when energized. 25 is engaged with the locking step portion 24a, the switch 28, which is opened by the lock piece 25, intervenes to prevent the locking step 24a.

Next, the operation will be explained. When the solenoid 7 is energized, the movable element 8 rotates, and the operating shaft 2 connected via the coupling 16 is returned to the closing element 6, and the opening resists the spring 3. When the small solenoid device 27 is turned to the desired position and the small solenoid device 27 is energized, the locking piece 25 engages with the locking step 24a of the cam 24 on the operating shaft 2.

A switch 28 that therefore intervenes in the operating circuit of the solenoid 7
Even when the lock piece 25 opens the operating shaft 2 and the closing member 6, the operating shaft 2 and the closing member 6 are kept in the open position.

Then, when the solenoid device 27 is de-energized, the lock piece 2
5 retreats from the locking step portion 24a.

Therefore, the operating shaft 2 and therefore the closing member 6 are rotated back by the return spring 3.

At this time, the rotor 8 of the rotary solenoid device 7 also rotates back, returning to the next operating position.

Next, an embodiment of the present device will be described with reference to the attached drawings.

In the drawings, reference numeral 1 denotes a gas cock consisting of a drive source 4 connected to an operating shaft 2 to rotate against a return spring 3; The disk-type cock is provided with a gas guide hole 12 that is pressed against one side wall surface of the cock body 5 in which the gas outlet 13 is provided and overlaps with the gas outlet 13.

The drive source 4 is a rotary solenoid device including a solenoid 7 and a movable element 8 that rotates when the solenoid 7 is energized. A spiral guide groove 20 that slopes downward in the circumferential direction is formed on the upper surface of the container housing 18 to be accommodated and on the collar 19 at the upper end of the mover 8 that protrudes above the container housing 18.
, 21, and a ball 22 is interposed between both grooves 20, 21, and the movable element 8 is constantly urged upward by a spring 23. When the solenoid 7 is energized, the movable element 8
moves downward against the spring 23, and along with this, the movable element 8 is rotated by the guide grooves 20, 21.

However, it goes without saying that the rotary solenoid device may be of a so-called linear type in which the movable element 8 does not move in the axial direction.

Reference numeral 17 denotes a coupling that connects the movable element 8 of the rotary solenoid device to the device shaft 2.
a and a cross pin 16b at the lower end of the shaft 17 that engages with the cross pin 16b, so that the shaft 17 can be moved in its axial direction.

In the drawing, 24 is a cam having a locking step 24a provided on the operating shaft 2, 25 is a locking piece that can be freely engaged and detached from the locking step 24a,
Reference numeral 27 designates a separate solenoid device having a weaker force than the solenoid 7 for engaging and disengaging the locking piece 25 from the locking step 24a. In the embodiment shown in FIG. 3, the locking piece 2
5 is urged away from the cam 24 by a spring 26 (clockwise in the drawing) so that the lock piece 25 engages with the locking step 24a of the cam 24 when the solenoid device 27 is energized. .

However, if the locking step 24a of the cam 24 is made into an inclined surface as shown in FIG. Since it is pushed out and disengaged from the locking step 24a, there is no need to apply the spring 26 to the lock piece 25.

In addition, FIG. 4 shows the operating circuit of the solenoid 7 of the solenoid device and the solenoid 27a of the solenoid device 27,
The solenoid 27a is connected to the power source via the power switch 29, and the solenoid 7 is connected to the power source via the power switch 29 and the actuation switch 28.

This operation switch 28 is configured such that the lock piece 25 is connected to the cam 24.
The locking piece 25 closes when the cam 24 is pulled away from the cam 24.
Thus, when the lock piece 25 engages with the locking step 24a, it is closed only by the engagement of the lock piece 25 with the locking step 24a. Child 6
is now held in the open position.

In this way, according to the present invention, the gas hook 1 includes a cock body 5 having a gas port 11 and a gas outlet 13;
A disk type cock is provided with a gas guide hole 12 that is pressed against one side wall surface of the cock body 5 in which the gas port 11 or the gas outlet 13 is provided in the cock body 5, and overlaps with the gas port 11 or the gas outlet 13. Therefore, even if a rotary solenoid device with a relatively small rotational force is used as the drive source 4, there is little biting of the closing member 6, so it can be reliably rotated to the open position, and the rotary solenoid device According to the method, since the small angle rotation necessary for rotation to the open position can be directly obtained, there is no need to interpose a gear train between the drive source 4 and the operating shaft 2, and the return rotation by the return spring 3 is performed. The load acting on the operating shaft 2 during operation is reduced as much as possible, eliminating the need for a clutch, and fixing the cam having the locking step 24a of the operating shaft 2, and using a separate solenoid with a force weaker than that of the solenoid 7. A lock piece 25 that engages with the locking step 24a when the solenoid device 27 is energized is provided, and the lock piece 25 opens the switch 28 that intervenes in the operating circuit of the solenoid 7, so the gas cock can be used as a small solenoid. The device 27 can hold the valve in an open state, further reducing power consumption.Furthermore, in the event of a power outage, when the power to the solenoid 27 is cut off, the engagement of the locking piece 25 with the locking step 24a is released. Therefore, the gas cock 1 is automatically closed by the elastic force of the spring 3 and is safe. Furthermore, since the operating shaft 2 and the movable element 8 are connected via the coupling 16, the closing element 6 is closed by the spring 3. When the movable element 8 automatically returns, the movable element 8 can also be automatically returned accordingly.
It can be expected that a gas control device with a simple structure, small size, and low cost can be easily obtained without requiring a special configuration for automatically returning the gas.

[Brief explanation of drawings]

Figure 1 is a cutaway side view of an example of the device of the present invention, and Figure 2 is a side view of one example of the device of the present invention.
3 is a plan view showing a locking mechanism used in the device, FIG. 4 is a control circuit diagram thereof, and FIG. 5 is a plan view showing a modification of the locking mechanism. be. 1...Gas cock, 2...Operation axis, 3
... Return spring, 4... Drive source, 5...
...cock body, 6...closer, 7...
...Solenoid, 8...Movable element.

Claims (1)

[Scope of utility model registration request] In a type of gas cock 1 in which a driving source 4 which is rotatably driven against a return spring 3 is connected to an operating shaft 2 of a gas cock 1, the gas cock 1 is connected to a cock body 5 having a gas port 11 and a gas outlet 13. , a gas guide hole 12 which is pressed against one side wall surface of the cock body 5 provided with the gas port 11 or the gas outlet 13 in the cock body 5 and overlaps with the gas port 11 or the gas outlet 13;
The drive source 4 is a rotary solenoid device comprising a solenoid 7 and a movable element 8 that rotates when the solenoid 7 is energized.
and the operating shaft 2 are connected by a coupling 17, and the operating shaft 2 is further provided with a cam 24 having a locking step 24a, and the locking step 24a is provided with a locking piece 25 that can be freely engaged and detached. The locking step portion 24 is only when the lock piece 25 is energized.
A separate solenoid device 27 having a weaker force than the solenoid 7 kept in the engaged state is connected to the operating circuit of the solenoid 7, and when the lock piece 25 is engaged with the locking step 24a, the lock piece A gas control device which intervenes with a switch 28 which is opened by 25.